What Is Yield Curve?
The yield curve plots bond yields across different maturities. Learn how a normal, flat, and inverted yield curve signal economic conditions.
Definition
The yield curve is a graph that plots the interest rates (yields) of bonds with the same credit quality but different maturity dates. The most followed yield curve is the U.S. Treasury yield curve, which shows the yields of 1-month, 3-month, 6-month, 1-year, 2-year, 5-year, 10-year, and 30-year Treasury bonds. Normally, longer-term bonds pay higher yields to compensate investors for the greater risk of tying up money for longer periods.
There are three main shapes: normal (upward sloping -- long-term yields higher than short-term, indicating healthy growth expectations), flat (short and long-term yields are similar, signaling economic uncertainty), and inverted (short-term yields higher than long-term, a historically reliable recession warning).
The most watched spread is the 2-year vs 10-year Treasury yield (the "2-10 spread"). When the 2-year yield exceeds the 10-year yield (inversion), it has preceded every U.S. recession since 1955 with only one false signal. The inversion typically occurs 6-24 months before the recession begins, making it the most reliable recession predictor known.
Real-World Example
In 2022-2023, the 2-year Treasury yield rose above 5% while the 10-year remained near 4% -- a significant inversion. This signaled that bond markets expected the Fed's aggressive rate hikes to slow the economy. The 3-month vs 10-year curve also inverted deeply. Historically, this degree of inversion has preceded every recession, though the timing is imprecise. Whether the economy enters recession or achieves a "soft landing" was the biggest economic question of 2024.
Why It Matters
The yield curve is one of the most powerful forecasting tools in finance. An inverted yield curve does not cause recessions, but it reflects market expectations that the Fed has overtightened and the economy will slow. For investors, monitoring the yield curve helps with portfolio positioning: when inversion occurs, consider reducing risk, increasing bond allocation, and favoring defensive sectors. When the curve normalizes (steepens), it often signals recovery is beginning.
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Frequently Asked Questions
Why does an inverted yield curve predict recessions?
When short-term rates exceed long-term rates, it means the market expects the Fed to cut rates in the future because the economy is weakening. It also signals that banks' lending margins are compressed (they borrow short and lend long), which reduces lending and slows the economy.
How long after inversion does a recession start?
Historically, recessions have started 6-24 months after the initial inversion, with an average lead time of about 12-18 months. The timing is imprecise, which makes it a warning signal rather than a timing tool.
What is a normal yield curve?
A normal yield curve slopes upward: short-term rates are lower than long-term rates. This reflects the expectation of healthy economic growth and the time premium (investors demand more compensation for locking up money for longer periods).
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